That’s the verdict of former Premier League star Stan Collymore, who says Mourinho is paying the price for failing to adapt.
Jose Mourinho endured a stormy pre-season as United failed to sign his targets and rumours of rifts with key players rumbled on.
The opening weekend win over Leicester did nothing to lift the gloom over the man currently at the helm at Old Trafford.
And his mood will have worsened on Sunday as a limp United suffered a 3-2 defeat at the hands of Chris Hughton’s Brighton.
Mourinho is the favourite with most bookmakers to be the next Premier League manager to leave his post.
And Collymore has now offered his take on who should replace the 55-year-old if Manchester United decide his time is up.
“I’ve always thought Mauricio Pochettino would be an obvious candidate,” Collymore wrote for the Mirror.
“I like the idea of Zinedine Zidane, too.
“But right now, Man United are going nowhere fast.
“They won’t drop out of the Champions League places as they are still good enough to get the top four.
“But they are all about attacking football, feel-good factor, the Theatre of Dreams, winning trophies with a smile and swagger.”
Mourinho has faced claims he is repeating the difficult third seasons which saw him twice sacked by Chelsea.
While Collymore believes that explanation is too simple, he says there’s a reason the Portuguese is struggling.
“A lot of people were willing to give [Mourinho] the benefit of the doubt and say if he buys this or that player, Manchester United will be alright, will be more motivated this year etc etc etc,” Collymore said.
“I don’t buy into the whole ‘Mourinho third year’ thing as the reason why things aren’t going right at the moment.
“That is a lazy cliche.
“The reason he has been underwhelming is because he didn’t adapt.”
Jamie Carragher revealed on Sky Sports’ Monday Night Football that he thinks Mourinho might not see out the season at United.
“Not just because of yesterday and not a big knee-jerk reaction as Man United lost a game away from home, but what’s happened in the summer, if performances like that continue, I don’t think Jose Mourinho will be manager of Man United next season,” Carragher said.
“He may not be manager of them at some point this season.”